What kind of watch does the app support?

The app supports devices: Smart Baby Watch, Smart GPS Watch, Smart Pet Tracker, Smart Tracker and the other similar models

From the manufacturers:
Wonlex, Smart Baby Watch, Pax +, Wokka Lokka, Elari, Titan Watch, CARCAM, LEMFO, NOCO and many others.

Models: Q50, Q60, Q70, Q75, Q80, Q90, Q100, Q200, Q300s, Q360, Q1000, Gw100, Gw200, Gw300, Gw400, Gw500, Gw900, Gw700, Gw800, Gw900, Gw1000, Gw800, Ew100, Ew200, D100, A16 and others.